KK6TDF
Active2x3District 6
Competitive callsign — 1 application filed with the FCC.
License HolderConstantine, Fred R
License ClassTechnician
Min. Class RequiredTechnician
LocationCalistoga, CA
Grant DateApr 8, 2025
Expiration DateApr 8, 2035
KK6TDF is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Constantine, Fred R in Calistoga, CA. This callsign has attracted significant interest in the amateur radio community, with 1 vanity application filed with the FCC. The most recent was submitted by Knowles, Kenneth W on Jul 15, 2015. KK6TDF has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- -.- -.... - -.. ..-.
CW Weight: 35 units(Moderate)
Voice Phonetics
Kilo Kilo Six Tango Delta Foxtrot
Readability: 7.5/10(High readability)
License History
- License RenewedApr 8, 2025
- System-Generated GrantApr 8, 2015
- License IssuedApr 8, 2015
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Knowles, Kenneth WFiled Jul 15, 2015Not awardedFCC ↗